Talk given for the San Francisco Python Meetup at Yelp on May 8th, 2013. Focused mainly in Selenium and Testing tips.

1. Selenium for Pythonistas
Add real browsers to your Utility Belt!
sso@saucelabs - @santiycr - Sauce Labs

2. Who's this dude?
Santiago Suarez Ordoñez
Lead Backend Developer - Sauce Labs
Committer - Selenium Project
6+ years on Selenium and Python

3. How about Sauce Labs?
Browsers in the cloud
Test mobile and web apps in parallel
+150 OS/Browser platforms
Videos, screenshots, logs, badges, FLOSS

4. Agenda
Selenium is just a library
Testing best practices
Selenium best practices
Advanced features
Debugging
Q&A

5. Selenium
History and Goals

6. How do I use it?
Demo!

7. What people use it for?
Common use cases for real browsers

8. Let's focus on testing
That's what you're here for

9. DRY
That's what you're here for

10. MOCK ALL THE THINGS!!
If you didn't write it, don't rely on it

11. Write small tests
Less is more

12. :,(

13. Avoid inter-test
dependencies
Independent tests are good!

14. Tests Start
Test Create
Account
(User A)
Test Login
(User A)
Test Change
Password
(User A)
Test Close
Account
(User A)

15. Run tests automatically
CI, pre-commit, CD, monitoring

16. Keep your build green
100% green is the only green

18. Make writing tests easy
If it takes > 30 min, I'm not gonna do it

19. Now regarding Selenium
There's lots of Selenium best practices

20. Do Not Use Selenium!
No, seriously!

21. Generate application state
The UI is the slowest path to any state in
your app

22. Use Guinea Pigs
Test complex widgets out of app workflows

24. Parallelize
Browsers are slow and bulky.
Throw hardware at the problem.

26. Use Page Object Models
They are just code abstractions, you know?

27. Use Javascript
execute_script("window.antigravity")

28. Use waits in your tests
Implicit and Explicit waits will get you 90% there

29. Debugging failures
Consumes 99% of your time while working
with Selenium

30. Appium

31. Questions?
Hot Sauce anyone?

32. sso@saucelabs - @santiycr - Sauce Labs
Thanks!